Internal-combustion engine



x w. ,v .w .......r...rr

P.VP. BU'URNE. lNERNAL CUMBUSTI'ON ENGINE.

APPLICATION me JUNE 14, 192x.

Patented May 16 UNITED STATES .PATENT OFFICE.

PHILLN LBlllRNE, 0F `WtNCHESTER, MASSACHUSETTS. ASSIGNOR TO WRTHING- TIN PUMP AND MAGHXNERY CORPORATION, OF :YDR/K, N. Y., A CORYORATION OF VIRGINIA.

IIIQ'TERNAL-COMBUSTION ENGINE.

internal coml'aistioi'i engines. and iiarticularly in englines oit the fziossdn-ad type. In present constructiomi.y the oil working up thri'mgh. the pisttm-rod stuffing-boxes is wiped off 'the pieton-rod on the downvstl'ohe and subsequently swept, bythe scavenging' air.; Tuto the power cylinder and l'nir'ned, With consequent loss thereof and increased .smolriness ot' the exl'ianst. iiccordingto the presentinvention, provision is made for collecting the oil thus `wiped ott" the pistonrod in a chamber and forcing the saine 'therefrom hy scavenging air compressed op the voutetrolre ot the piston, through coniiections. from such oil-collecting chamber to a point insuring its return to the source ot' supply, or to other desired point, for reuse The oil recovering means here disclosed, therefore, provides for efficient oilhop;M of Athe piston-rod' Without Waste ot' luhricant and with decreased sinokiness of the exhaust.

yFor a t'uil understanding of the invention,

an engine embodying the same vin its pre terred form will non7 be described in detail in connection with the accompanying drawingrs, andthe "novel features thereof then be pointed ontin the claims.

l'n the iilr'aivingsm Figui-o l is a Avertical transverse section of an internal combustion engine, which may he' of the Diesel type. showing the general arrantgclnent of parts for .carrying out the inventiomand Figure SZ is a sectional detail View' of a preferred construction of piston-rod stuiiing- 'box and oil drainage connect-ions.

Referring now to the diauings1 and par-` ticularly to lig. i., the engine shown a tno-cyclc internal combustion engine, with .inner crosshead guide and crank. casing l0 Specification of Letters Patent.

Application filed Tune 14, i921. Serial No. 477,392.

Patented May 16, 1922.

and outer casingr 11. which form a scavengrl ingr air-receiving' chamber 12, into which an' for scavenging purposes is drawn past `autmnatic inlet valres'l on the upstroke of the piston A. The piston rod 2 asses through a stnihngir loox 3 mounted above the crosshead guide as usual, such stuffing box being provided with the usual packing and also having` an extension, prefelal'ily formed integral therwvith. forming a hooded oilcollecting chamber eli. the piston-rod orifice in the top ol which is sufiiciently large to prevent contact -with the piston-rod and also I permit free access to chamber 4 ot' scavel'igingr air under conmression on thedownstroke of the piston. The bottom of the chamber 4 is preferably coned7 as shown, to facilitate drainage of oil therefrom through .connections 5, such connections preferably leading to a point in the interior of the crosshead casing which will insure proper lubrication of the guide by oil forced v through such connections, although it will 'he obvious that the oil may be led by such connections to any other point, such, for example. as the reservoir in the crank casing. indicated generally by the numeral 6. In order to prevent hacktlow of oil in the connections 5, when the piston 2 is on the suction stroke, non-return valves of any well-l nown type, indicated generally at 8, are provided in such connections, or the valves may he omitted and a small discharge opening from the stuffing'box used i in- :many cases.

From the foregoing it will he seen that as the oil adhering to the piston-rod 2 is wiped therefrom by the coned bottom of the chamber 45 on the downstroke of the piston and collects in the chamber 4, it isimmediately forced therefrom through the connections 5 past the non-return valves 8, by the c0mpression of the air drawn into the scavenging air receiving chamber l2 on thev prev1- ous upstrolre7 such piston-compressed air having ready access to chamber 4 through ivo@ engine in which pressure is similarly :iviiiiobio and appiicibie for oil recovery.'

"iii/' is Claimed. is:

i. Oil ioaoveiiiig means for engines o0mpvisiiig ii gistonaod stuing box having an open-ended oii-coiletiig chamber accessi bis to s pistoiycompos-@ed modium, and an outiei ,iiomvsaid chamber through which oii is ie-ivoraii.

@ii ecoveingmamis foi internal combusoioi ei'igines, comprising a. closed crank and crosshemi chamber, a stuffing box above tive r'frossheeifi, a, hooded mi ensioii on `said stiifiing ivo); forming un oil-collecting; Chaimboi' `openo the air compressed by the 'pistoii on its outward stvoke, :md am ouiet connection from' Said. frfmber thi'oug'h .Whichthe oii is deiiveied.

3. @il ifocovering means 'for internal c0mbustioii engines, Comprising; i closed vi'aiik and ox'osshead. chamber, :i stu'iing box above,

h@ @fossili-aad, hooded exeiision on said Suiiing boi: forming :in oibcoiieotingchain ber opi-11 air ,compressed by the pison on it, outward stroke, an outlet connection from said Chamber through which the, oil i5 deiiveed"and :i nonmeuru valve in Said outlo. 'v i i 4. fOil recovering means for internal com bil-Stien enginese comprising a. closed crank and orosshead climnboz, :i pistonmod smiiing box above 'iie crosshoud, an openmidifd oxtension o .mici stuffing; box foi-ming :in oil.- Coiiecing chamber accessible to ail' com piesed by the Piston on its outward Stroke. outlet connections from said chamber through which oii j:is delivered, and nonN return valves in Suid connections.

Oil recovering moans for intcinui combustion engines, Comprising pistomrod swffiug box 2% und oil collecting chamber fopen to the piston*unimpressed air, and om or more outlets (i. @ii recovering means for internal com xmson engines, comprising pistondod stuff ing-box 23 and oil collecting; chzmiber fi 0pm; 'o pistou-compressed ail'. one or more outmls from Said chamber to the crank chzimwl. and nou-179mm vaives 8 in said outlets.

7. iiiecovmfinkg: moans: for intox-11:11 com busion engnes complisiim` piston-rod stuf`- ing' nox :mii oii Coileoting vimmbvl 4; opv to piston-comincssed ainy one or more ontios 5 from Suid Chamber for deliwxng return valves 2S in said. outlets.

In testimony Where@ l", havo hereunto sot. my hand.

PHHJLPS EOURNE,

Cil 

